Cisco IOS 15.2(04)M/15.4(03)M Virtual PPP Interface ACL input validation

CVSS Meta Temp Score
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6.0$0-$5k0.00

A vulnerability classified as critical was found in Cisco IOS 15.2(04)M/15.4(03)M (Router Operating System). This vulnerability affects an unknown code block of the component Virtual PPP Interface ACL. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Cisco IOS 15.2(04)M and 15.4(03)M lets physical-interface ACLs supersede virtual PPP interface ACLs, which allows remote authenticated users to bypass intended network-traffic restrictions in opportunistic circumstances by using PPP, aka Bug ID CSCur61303.

The weakness was published 11/14/2015 with Cisco as CSCur61303 as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability was named CVE-2015-6365 since 08/17/2015. The attack can be initiated remotely. The requirement for exploitation is a single authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 86950 (Cisco IOS Virtual PPP Interfaces Security Bypass), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (86950).

Productinfo

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Version

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Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 86950
Nessus Name: Cisco IOS Virtual PPP Interfaces Security Bypass
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco IOS Software Virtual PPP Interfaces Security Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/17/2015 🔍
11/13/2015 +88 days 🔍
11/13/2015 +0 days 🔍
11/13/2015 +0 days 🔍
11/13/2015 +0 days 🔍
11/14/2015 +1 days 🔍
11/15/2015 +1 days 🔍
11/16/2015 +1 days 🔍
11/19/2015 +3 days 🔍
06/27/2022 +2412 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCur61303
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-6365 (🔍)
OVAL: 🔍

SecurityTracker: 1034158
Vulnerability Center: 54393 - [cisco-sa-20151112-ios1] Cisco IOS 15.2(04)M and 15.4(03)M Remote Bypass Restrictions via Virtual PPP, Medium
SecurityFocus: 77583 - Cisco IOS Software CVE-2015-6365 Security Bypass Vulnerability

Entryinfo

Created: 11/16/2015 10:01
Updated: 06/27/2022 13:17
Changes: 11/16/2015 10:01 (58), 04/12/2018 17:09 (17), 06/27/2022 13:17 (3)
Complete: 🔍

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